The XO laptop I received last week as part of the One Laptop Per Child (OLPC) Project's "Give One Get One" (G1G1) promotion is unlike any other laptop I've ever used, both in appearance and functionality. It's smaller, for one thing. The XO weighs only 3.13 pounds, is 9 inches wide, and approximately an inch thick when closed. But there's a lot more difference between the XO and a normal laptop computer than size.